China High Quality Full Thread Self-Tapping Screw

Providing Order-specific Reports

To assure you of market-leading product quality, we make each approved item using the finest materials from Europe, and the latest machines from Switzerland and Italy. Plus, we carry out strict in-house QC measures at multiple stages in our ISO 9001:2000-certified facilities, storing all results in our central databank. So we can provide you with detailed order-specific reports on tensile strength, torque and zinc plating thickness.

Screws are tools that use the physical and mathematical principles of the circular rotation of the inclined plane of objects and the friction force to tighten the artifacts and parts step by step. Screw is the common expression of fastener, and it is a common colloquialism. Screws are indispensable industrial necessities in daily life: such as tiny screws used in cameras, glasses, clocks and watches, electronics, etc; General screws for TV, electrical products, musical instruments, furniture, etc; Large screws and nuts are used for projects, buildings and bridges; Transportation appliances, airplanes, trams, automobiles, etc. are used for large and small screws.